Winding machine



0. R. HAAS WINDING MACHINE May 19, I931.

'7 Sheets-sheaf. 1

Filed April 24, 1929 4 T II Illlllilllllll Ill 4 0. R. HAAS WINDING MACHINE May 19, 1931.

Filed April 24, 1929 '7 Sheets-Sheet 2 fl'zfarin z d NM QW N MUN 0. R. HAAS WINDING MACHINE May 19, 1931.

7 Sheets-Sheet 3 Filed April 24, 1929 07 (aw/(M D I (1% 777g? 0. R. HAAS WINDING MACHINE May 19, 1931,

Filed April 24, 1929 7 Sheets-Sheet 4 I77 11/077307 (Z8147- fl, /42 4/,

66'???) riieg a May 19, 1931.

O. R. HAAS WINDING MACHINE 7 Sheets-Sheet 5 Filed April 24, 1929 May 19, 1931. Y b. R. HMS 1,805,544

WINDING MACHINE Filed April 24, 1 929 7-Sheets-Sheet 6 w & fl zZai'iieg i rection and the remainder of the thread Patented May 19,- 1931 onrnnnrconrone'rron, or rn'rnnson JERSEY a WINDING Application filed April 24,.

The present invention relates to winding machines and inore particularly to winding machines for winding sewing machine bobbins. r V

The bobbin winding machine herein disclosed .as embodying the several features of the present invention is particularly adapted for producing filled bobbinshaving aportion of the thread wound on the bobbin in one diwcund on the bobbin in the reverse direction and. is similar in many respects to the machine dis closed in the patent, to Topham, No.

1,625,232, dated irpril 19, 1927. r 7

One object of the present invention is to providein a machine of this "general description a' novel'and improved mechanism for reversing the direction of the winding after a predetermined number of turns of thread have been wound onto the bobbin.

A. further object of the present invention is toprovide, a novel and improved means.

which will be simple in construction 'andfefficlent and reliable 111, operatlon'forautd matically rendering the winding mechanism inoperative after the mass ofthe wound mate:

. rial has reached a'predetermined thickness.

rinother object of the invention is to provide means for holding the thread in place.

' IOE'III Fig. 2 is a view similar to Fig. 1, partly 1n section, on the lines 22 of F1g..5,11llustrating particularly thedriving mechanlsm rangem'ent of parts hereinafter described and on the bobbin upon reversing the direction of the windings The several features of the invention cone sist m the, devices, combinatlons, and ar claimed, and together with the advantages to be obtained thereby, should be readily un derstood-by one skilled in the art from the following description taken in connection with the accompanying drawings. 1

In the drawings, Figulis a View in front elevationof the bobbin winding 1 machine herein disclosed as embodying in a preferred the several features of the invention;

* for the windingshaft with the parts in rest position Fig. 3 isa planview of the machine T as shown'in Figs. 1 and 2; Fig. 4 is a detail view of the connections for throwing, the

o'rro n. HAAS, or Nome: nnvnnnY,"MnssAcHnsET'rs, ASSIGNOR'TO UNITED SHOE nnw JER'sEx', A CORPORATION 01 "NEW' MACHINE 1929. Serial No. 357,842.

timing imechanism into'operation uponstarting the machine in position directly after the machine hasbeen thrown into operation; Fig. 5 is a VieW-takenonthe line 5 5 of F ig. 8; Fig. 6isY'a left endelevatio'n of the machine; Fig/,7 is a sectional View. in left elevation taken on the, line 77 of Fig. 2; Fig. 8 is .a

view partly in section taken on the'line 8- 8 Fig. 141st detailiviewof the reversing clutch and'its actuating cam,"andFig.'l5 is adetail I viewfpar tly'in sectionshowing a modified construction of the bobbin s'p indl'e andladjacentportionsofthegwinding shaft. H Thebobb'n winding machine herein "disclosedi as the preferred embodimentof the I present invention comprises a bobbinfwind, ingwshaftwhich is drivenfrom an electric motor through a reversing'clutch which en'- ables the shaft tobe driven readily iiieither direction; The machine is thrown into operation, andfis stopped automatically when a bobbin: becomes fully wound,-by meansbf of Fig. 5 with the parts in restposition; Figs. .5

anovelandtimproved starting and stopping 1 mechanism which comprises anoff and on switch for the electric motor, a threadcon tact lever connected to cooperate-with the switch, and. a toggle spring [for controlling the operation of these parts. As the thread .mass on which the thread contact lever rests reaches .the required thickness, the toggle;

spring is carried past its center position to throwthe lever away from the bobbin. and

turnthe switch to .ofi position; Thereve'r'sing'olutch isfcontrolled to cause the winding shaft to be 'driven'in one direction during and thereafter inv the opposite directionloy means of a timinglmechanism comprising. a cam; which, driven through one revolution upon starting themachinein timed relation.

' the winding Z'of the fir'st part of the bobbinv 7 ice to the winding shaft and acts to shift the reversing clutch to drive the winding shaft first in one direction and then in the opposite direction during the continued operation of the machine. p

In order to insure proper handling of the thread upon reversing the direction of the winding, the construction herein illustrated also includes a pin which is inserted in the bobbin upon reversing the direction of rotation to hold the thread securely in posit-ion and to serve as an anchor on the bobbin from which the thread is wound on the bobbin in the reverse direction. After a number of turns have been placed on the bobbin, the pin isvwithdrawn and the winding is completed in the usual manner.

Referring'more specifically to the drawmgr-1, the machine comprises a base 14 on w ich is supported the electric motor 16 through which the machine is driven and a frame 18 within which is mounted the wind ing shaft 20. The winding shaft 20 is driven from the electric motor 16 through connections comprising a shaft 22 which is j ournaled to rotate in the machine frame in alignment with the armature shaft 24 of the motor and is clutchedthereto through the clutch membore 26. At its free end the shaft 22 is provided with'a pinion 28 which engages with a gear 30 which is formed ona sleeve 32 loosely mounted on the winding shaft 20. In"

order to permit the winding shaft 20 to be driven from the sleeve 32 in either direction, asecond sleeve 34 is loosely mounted on the shaft 20 and is continuously driven in an Op- 8 po'Site direction through a chain of gearing which includes the bevel gear 36 formed on the sleeve 32, an intermediate idler gear 38 loosely mounted on a bearing pin 40, and a bevel gear 42 formed on the sleeve 34. A clutch sleeve 44 is keyed to slide on the winding shaft 20 and is provided at each end with clutch surfaces 46 which are adapted to engage with the corresponding clutch surfaces 48 formed on the ends of the sleeves 32 and 34, so that the clutch sleeve 44 may be connected to either sleeve 32 or 34 to drive the shaft 20 in opposite directions.

The clutch sleeve 44 is moved into engagebout with the sleeve 32 upon starting the machine to rotate the winding shaft 20 through-a predetermined number of revolutions in one direction and is then moved into enga ement withthe sleeve 34 to drive the winding shaft in the opposite direction during the continued operation of the machine by means of a yoke 50 sleeved on a shaft 52 and provided with rolls54 which engage in a. groove 56 in the clutch sleeve 44.- The yoke is also provided with a downwardly extending arm 58 adapted to engage with a cam c 60 which is secured to a shaft 62 and forms in a bracket 97 on the machinevframe.

clamped in position during the winding operation between a flange 7O rigidly secured to the winding shaft by means of a set screw 7 2 and a flange 74 which is screwed onto the end of the reduced portion 66 of the winding shaft after the bobbin 68 has been placed on the spindle to clamp it securely in position.

The mechanism for throwing the machine into operation and for automatically stopping it when the bobbin 68 becomes fully wound comprises a fceler or lever arm 7 6 which is secured to one end of a rock shaft 78 and is provided with a roll 80 which is adapted to ride on the mass of the thread being wound on the bobin. A lever arm 82 secured to the rock shaft 78 is connected by'means of an ad justable link 84 to an arm 86 which is secured to a shaft 88 journaled in the machine frame at right angles to the shaft 78. The lever 76 with the cam roll 80 is held in contact with the mass of thread on the bobbin 68 until the bobbin is fully wound and then is moved out of contact with the bobbin by means of a toggle spring 90 which is secured at one end to a pin 92 and at its other end to a 'pin 94 formed on an arm 96 on the shaft 88.

As the mass of thread is built up and the lever '76 and cam roll 80 are moved outwardly, the shaft88 will be rotated gradually to a point where the spring 90 and the arm 96 pass center position, and thereupon the toggle spring 90 will act to rotate the shaft 88 quickly to the limit of its movement to cause the motor switch to be thrown out. The 'feeler arm 76 is at the same time moved to its inoperative position out of contact with the bobbin as shown in Fig. 1. In order to determine exactly the amount of thread which is to be wound on the bobbin before the toggle spring 90 is rendered operative to rotate the shaft 88 to a position corresponding to the off position of the motor switch, the pin 92 to which the toggle spring 90 is anchored is screw threaded for adjustment The point at which the lever arm 96 and the spring 90 pass center and act to throw the shaft 88 to open position can thus be altered to stop the machine after the desired thickness of thread has been wound on the bobbin.

The off and on switch for throwing the motor into and out of operation is indicated generally at 98 and is actuated by the feeler arm or lever 76 to turn the switch from on to off position and back again through connections which comprise a shaft 100 journaled in the machine frame and secured at one end to turn with the switch. At its free end, this foif position and back again by means of asmall toggle spring 106 which is secured at one end to a pin 108 on the arm 102 andat its other end to a pm on the correspond ing arm 104 secured to the shaft 88. With the lever arm 104 on the shaft 88 raised as shown inFig. 8 to correspondwith the inoperative position of the feeler lever 76, the

l'ever arm 102 is held in a raised position by the toggle spring 106 against the upper stop 111 so that the starting and stopping switch 98 controlled through the shaft 100 willbe' in an off position. When the feeler arm 76 is forced down into contact with the drum of a... new bobbin by the operator to startthe machine, the shaft 88 and lever arm 104 are rotated to swing the axis of the toggle spring 106 past center so that the lever arm 102 and shaft 100 will be rotated against thestop 113 as illustrated in Fig.4 to close thestarting and stopping switch of the motor. Inorder to secure a quick throw of the switchithe arms 102 and 104 are provided withcorresponding flanges- 112 and 114 which cooperate to prevent the movement ofthe shaft 100 and arm 102 I under the pressure of the toggle spring 106 until after the spring 'haspass'ed the center point by a'considerable distance.

When thelever '4' 6 is forced down into contact with the bobbin to start the machine, will be seen that the arm 102 is held against niove ient about its pivot by the contact of the flanges 112 and 114 until the-flange 112 has entirely passed the end of the flange 114 at which time the toggle spring 106 will have passed the center point by a considerablemarthis point the arm 102 will be moved in theoperating position illustrated in Fig. 4 by the engagement ofthe flanges 112;and

rapidly about its pivot by the spring 106 to close the switch. As the lever 104 on the shaft 88 is gradually lifted with the feeler lever '76 during the winding of the, bobbin, the lever 102 and shaft 100'are positively held 114 until the shaft 88 and lever ar1n 104are finally thrown to off pos1t1onby the action of the toggle spring 90. The lever arm 10:2

and shaft 100 are then permitted to snap into e off position shown in Fig. 8 under the :ence of the toggle spring 106'. r

In order to insure proper handling of the thread upon reversing the direction ofthe winding, mechanism is provided which acts to hold the thread in position upon thebobbin until after a number of turns have been wound on the bobbin in the reverse direction. Tins mechanism comprises a pin 116 which is secured to a sleeve 118' keyed to slide uponthe winding shaft 20 and is adapted to extend through a perforation in the flange 70 and an aperture '0rslot1117 formed in one of the flanges ofthe-bobbin. When the direction of the winding is reversed, the pin 116 is moved across the drum or barrel of thebobbin 68 so bin in fthe reverse direction, the pin 116 is withdrawn and the winding is continued until the bobbin is fully wound; The pin 116 is, moved into operative position when the direction of winding is reversed andis then moved back again by means of alever 120 which is pivoted at 122 on the machine frame and at its upper end is provided with a yoke carrying the rolls 124 to engage with a groove 126 formed in the sleeve 118 on which the pin 116 is supported. The lever 120 is connected by means of a link 128 to theupper end of a cam lever 130 which is loosely mounted on the pivot shaft l32 and carries a cam roll 134 adapted to engage in a cam groove 136 formed in'the face of the cam disk 138 mounted on the shaft'62. I

The timing mechanism for reversing the connectionstherefor including a one revolution CllltClLWlllCll is actuated upon starting the machine to rotate the shaft 62 and the cams 60 and 138 at a relatively slow speed through approximately one revolution in timed relation to the-winding shaft 20. The

driving connections for the shaft'62 comprise a gear 140 which is loosely sleeved on the shaft 62 and is continuously driven from the motor 16 through gearing which includes thege ar 142 formed on the sleeve 34, the gear 144*meshing therewith secured to a rotary shaft 146 and the worm gear 148 which is also secured to the shaft 146 and meshes with the gear 140. The gear 140 is connected to drive the shaft 62 and the cams 60 and 138 by means of an overrunning clutch which is adapted to operate, when the machine is started, to rotate'the cams through approximately one revolution. The component parts of the overrunning clutch (see'Figs. 9, 10 and 11) co1npri'sea sleeve 150 secured to the shaft62 by means of a set screw'152. A second sleeve 154 is loosely fitted to the sleeve 150 and is provided with a series of slots in which cam rolls 156 are adapted to ride. between the sleeve 150 and internal surface 158 formed in the 7 gear 140. Flattened portions are provided onthe sleeve 150to permit the rolls 156 to rotate freely between. the twov surfaces for one position of the sleeve 154. In order to bring the clutch members into locking engagement, a tension spring 160 is provided which is secured atone end'to a pin 161 fastened to turn with the sleeve 150 and the shaft 62 and at its other end to a point in the sleeve 154, and acts to bring the rolls 156 into locking engagement with the corresponding surfaces of the sleeve 150 and the gear 140 to drive the shaft 62. The sleeve 154 is normally held against the pressure of the spring 160 to render the clutch inoperative to rotate the shaft 62 by means of a latch lever 162 which is loosely mounted on the pivot shaft 132 and is adapted to engage with a recess 166 in the sleeve 154. A tension spring 167 fastened to an arm of the latch lever 162 tends to hold it at all times in engagement with the periphery of the sleeve 154.

Mechanism is provided which acts automatically upon starting the machine to trip the latch lever 162 so that the shaft 62 carrying the operating cams will be permitted to rotate with the gear 140 through one revolution before the latch lever again engages with the recess 166 in the sleeve 154. This mechanism comprises a bell crank lever 168 which is loosely mounted on the shaft 132 adjacent to the latch lever 162 and is connected by a link 170 to the lever arm 102 for operating the off and on switch of the motor. In order to cause the latch lever 162 to be tripped when the lever arm 102 and the bell crank lever 168 actuated through the link 170 are thrown over in starting the machine, a small latch lever 172 is pivotally mounted at 174 on the free arm of the bell crank lever 168 and is held yieldingly in a position to cause one arm of this latch 172 to engage'a corresponding abutment 176 on the hub of the latch lever 162 by means of a compression spring 178 which is held at one end in a recessed portion of the upwardly extending arm of the small latch lever 172 and at its other end in a corresponding recess in the bell crank lever 168. As the lever 102 of the starting and stopping switch and the bell crank lever 168 are moved from the rest position illustrated in Fig. 8 to the operating position illustrated in Fig. 4, the small latch lever 172 engages the abutment 176, thus causing the latch lever 162 to be moved against the pressure of its spring 167 to permit the shaft 62 to be operably connected to the driving gear 140 as previously described. The continued movement of the bell crank lever 168 about its pivot causes the outwardly extending end of the small latch lever 172 to come in contact with an adjustable stop screw 180 to disengage the latch from the abutment 176 as shown in Fig. 4 so that the latch lever 162 will be free at the end of one revolution of the shaft 62 and sleey e 154 to engage again in the recess 166 and stop further rotation of the shaft 62.

a bobbin on the winding shaft during the winding operation is illustrated in Fi 15 on sheet 2 of the drawings. The end 0 the winding shaft 20 on which the bobbin is supported is ground to a smaller diameter as shown at 184 and a sleeve 186 is mounted thereon and held in fixed position by means of a pin 188. Spring arms 190 are formed on the inner end of the sleeve 186 and act to )rovide a frictional resistance to hold a bob in in position on the winding shaft. In order to position the bobbin accurately on the winding shaft to bring the pin 116 into register with the corresponding aperture or slot in the flange of the bobbin and to hold the bobbin securely against rotation on the shaft, the pin 116 is adapted to slide in a bushing 192 which is mounted in the flange and projects beyond the face of the flange into engagement with the aperture in the flange of the bobbin. Asa safeguard against a possible slipping of the bobbin lengthwise on the winding shaft out of register with the bushing 192 during the winding operation, the bobbin is held in position by contact with the end of the feeler lever 76 which in this modification of the machine is made substantially the Width of the bobbin to be wound as shown at 194 in Fig. 15. At the beginning of the winding operation, the end of the thread is threaded through the slot in the wall of the bobbin and is carried out be tween the bobbin and the flange 70 through a small slot 196 in the face of the flange 70 and is secured to a thread clamp 198 on the outer surface of the flange.

Briefly stated, the operation of the machine is as follows: In order to start the machine, the operator moves the feeler arm 76 down into contact with the drum of the bobbin so that the shaft 88 and the arm 104 of the snap switch are moved down into the posi tion illustrated in Fig. 4, thus causing the off and on switch of the machine controlled through the toggle spring 106 and the lever arm 102 to be thrown into operative position to start the motor. At the same time, the one revolution clutch is rendered operative to rotate the shaft 62 carrying the cams 60 and 138 through one revolution to cause the winding shaft to be driven in one direction for a number of turns of thread on the bobbin and then to be driven in the opposite direction, and also to insert the pin 116 temporarily to hold the thread upon reversing the direction of the winding. The moven'ient of the lever arm 1 5 stop the motor.

leewa 102s of the off and on switch to operative posi-:

tion in starting theimachinecauses'the link 170 to move the bell crank lever 168 fromthe position shown in Fig.8 to that shown in Fig. i 4E, causing the small latch 17 2 to engage m0- mentarily with the abutment 17 6, of-the latch lever 162 to move the latch 162 outof engage ment with the abutment 166, on thesleeve154 of the one revolution clutch, the continued movement ofthe bell crank 168 causing one end of the small latch '17 2 toengage with the stop screw 180 to disengage the'latchfrom the abutment 17 6 so that at the end ofone revolution of the cam shaft v62, the latch lee-i ver 162 will. again engage the abutment 166 to; lock the shaft 62. against further movement, Starting from the rest position illu'stratedin Fig. 2, the rotation of the shaft 62 and; the cam 60 in a olockwisedirection will cause the cam lever 58 at once to ride ofi the high'portion of the cam to disconnect the clutchsleeve #1 1 from engagement. with the sleeve 34 and.

V to engage the clutch sleeve 44 with the sleeve 32 to drive the winding shaft in aibackward direction; After a predetermined number of revolutions of the winding shaft 20, the cam lever 58 willagain ride: onto the highportion 130 is actuated by the engagement ofthecain roll 13 1 in the cam groove 136 to advance the pin 116 across the barrel ofthe bobbin sothat upon reversing the direction of the winding shaft, the thread'is turnedover thespin, to

anchor the thread at thispointon thebobbin. 1

After a number of turns of thread havebeen wound on the bobbin in the new direction, the pin 116 is againwithdrawn by the action of the cam groove 136 on the camlever130. At the end of a complete revolution of the cam shaft 62,- the latch lever- 162 engages the abutment 166 to prevent further rotation of the shaft leaving theshaft and the cams 60; I, p I V V the thread is wound upon reversal-of the diand 138 in the positions illustrated inFi-gs. 2 and 8, with the pin 116 in a retracted position andthe cam lever 158 resting onthe' high part of the cam .60 to hold the sleeve gear 442-11161 gagement with the sleeve 3 As the bobbin becomes fully wound, the feeler arm ,7 6 is gradually raised and the arm 96 is moved up,-

wardly to a point where the toggle spring '90; passes center and'acts to rotate theshaft 88 ,5

and the fee-ler arm 76 to inoperative position At the same time, the lever 104 secured .to the end of the shaft 88 is moved to its raised:p:.0

sition' shown in Fig. 8, and the lever' 102'and shaft 100- of the off and on switch ofthemotor are permitted to snap into off position to Having thus described the invention, what,

is claimedis:

1; A bobbin winding machine having, in

combination, awinding shaft, dI1Vl11g'CO1lIl6C jtions therefor includingan electric motor, an:

arm adapted 1' tocontact with the mass of thread on the bobbin, and a switch actuated from the arm'to turn off the motor.

2. A bobbin,windingmachine having, in combination, a winding shaft,ldi'iving connections therefor including anelectric motor, an arm adaptedto contactwith the massof threadon the bobbin, and a switch actuated" from the arm asthe bobbin becomes fully wound tofturnofi the motor. I

3.-; Aflbobbin' winding machinefhaving, in combination, a winding shaft, driving, connections therefor including, an electriclmotor,

an arm adapted-to contact with the mass of thread on the bobbin, and. a stopping, switch.

for the motor controlled vby the position of the arm. Y A, bobbin winding machine having, in combination, a winding shaft, driving con nectionsltherefor including an electric motor,

an arm adapted to, contact with the mass of threadonthe'bobbin, a starting and stopping switchfforthe motor controlled. by the'posie tion of the arm, and a toggle spring to throw out the switchwhenthe-thread mass reaches a predetermined thickness.

- 5. A bobbin windingimachine havingting tcombiniation a shaft, driving con nections therefor including an 6l6CtI'lCI1'1-OtO-I,

anarm adaptedtocontact with the mass of threadionthelbobbin; an off. and on switch for 'themotor, and connections including a, tog- I gle spring for-actuating, the switch, front the arm r 6. A bobbin winding machine having, in combination, a winding shaft, driving con nections for driving. the shaft in. reverse directions,'mechanism foractuating and controllingthe driving connections to drive the vshaft. in one direction during the winding. of

a'number of turns of thread on the-bobbinand toldrive .the sha ft in the opposite direction during the winding.ofthe remainder of the thread onthejbobbin, and a pin over which rection of rotation of the-shaft.

; bobbin winding machine having, in

combination, a winding shaft, driving'connections fordriving the shaft in reverse1di= rect1 ons,'mechanism{' for actuating and cont-,7

8. A bobbin winding machine having, in

trolling the driving connections todrive the shaft in one direction during the windingnof a number of turns of thread onqthe bob-bin and to drivethe shaftin the oppositedirec tion during the winding of the remainder of the thread on the bobbin, a pin mounted on the shaft to rotate with the bobbin, and means for positioning the pin to cause the thread to be turned about the pin upon reversal of the direction of rotation of the shaft.

9. A bobbin winding machine having, in combination, a winding shaft, driving connections for driving the shaft in reverse directions, mechanism for actuating and controlling the driving connections to drive the shaft in one direction during the winding of a number of turns of thread on the bobbin and to drive the shaft in the opposite direction during the Winding of the remainder of the thread on the bobbin, :1 pin mounted on the shaft to rotate with the bobbin, and means rendered active upon reversal of the direction of winding for positioning the pin to cause the thread to be turned about the pin as the direction of winding is reversed.

10. A bobbin winding machine having, in combination, a spindle on which the bobbin is'supported, means for causing thread to be wound onto the bobbin while supported on the spindle, means for reversing the direction of the winding, and a pin about which the thread is turned when the direction of the windin is reversed.

11. A bo bin winding machine having, in combination, a spindle on which the bobbin in supported, winding mechanism for winding thread onto a bobbin while supported on the spindle, mechanism for actuating and controlling the winding mechanism to wind a number of turns of thread on the bobbin in one direction and thereafter to wind the bobbin in the opposite direction, and a pin about which the thread is turned upon reversing the direction of the winding.

12. A bobbin windingmachine having, in combination, a spindle on which the bobbin is supported, winding mechanisms for winding thread onto a bobbin while supported on the spindle, mechanism for actuating and controlling the winding mechanism to. wind at number of turns of thread on the bobbin inone direction and thereafter to wind the bobbin in the opposite direction, a pin, and means for inserting the pin in the bobbin to hold the thread with relation to the bobbin upon reversal of the direction of winding.

13. A bobbin winding machine having, in

combination, a winding shaft, driving con-' nections for driving the shaft in reverse directions, mechanism for actuatingand controlling the driving connections to drive the shaft in one direction during the winding of a number of turns of thread on the bobbin and to drive the shaft in the opposite direction during the winding of the remainder of the thread on the bobbin, a pin adapted to beinserted in the bobbin, and means for positioning the pin to cause the thread to be turned about the pin upon reversal of the direction of rotation of the spindle, and thereafter for withdrawing the pin.

14. A bobbin winding machine having, in combination, a winding shaft, driving connections for driving the shaft in reverse directions, mechanism for actuating and controlling the driving connections to drive the shaft in one direction during the winding of a number of turns of thread on the bobbin and to drive the shaft in the opposite direction during the winding of the remainder of the thread on the bobbin, a pin, and connections from the said mechanism for positioning the pin in the bobbin upon reversal of the direction of rotation of the shaft to secure the thread with relation to the bobbin.

15. A bobbin winding machine having, in combination, a winding shaft, drivingconnections for driving the shaft in reverse directions, a'cam actuated in timed relation to the winding shaft to maintain the driving connections in condition to drive the shaft in one direction for a number of revolutions of the shaft and thereafter to shiftthe driving connections to drive the sh aft in a reverse direction, means for driving the cam including a clutch, and means for controlling the clutch to disconnect the cam during the continued rotation of the shaft.

16. A bobbin'winding machine having, in combination, a winding shaft, driving connectionsfor driving the shaft in reverse directions, a cam actuated in timed relation to the winding shaft to maintain the driving connections in condition to drive the shaft in one direction for a number of revolutions of the shaft and thereafter to shift the driving connect-ions to drive the shaft in a reverse direction, means for driving the cam, and means for disconnecting the cam from its drivin means after the shift in the connections or driving the winding shaft.

17. A bobbin winding machine having, in combination, a winding shaft, driving connections including a reversing clutch for driving the shaft in reverse directions, a cam driven from the driving connections in timed relation to the rotation of the shaft, and means controlled by the cam for actuating the reversing clutch after a number of revolutions of the shaft in one direction to drive the shaft in the opposite direction to fully wind the bobbin. 7

18. A bobbin winding machine having, in combination, a winding shaft, driving connections for driving the shaft in reverse directions, and a camrendered operative upon starting the machine and driven through one revolutlon to maintain the driving connections in condition to drive the shaft in one direction for a number of revolutions of the shaft and thereafter to shift the driving connections to drive the shaft in a reverse direction.

19. A bobbin Winding machine having, in combination, a. winding shaft, driving con nections for driving the shaft in reversedirections, a cam driven from the drivingconnections to maintain said connections in condition to drive the shaft in one direction for a number, of revolutions of the shaft and thereafter to shift the driving connections to drive the shaft ina reverse direction, a one revolution clutch through which the cam is driven, and means rendered operative in starting the machine to throw the clutch into operation.

20. A bobbin winding machine having,sin combination, a. winding shaft, driving connections for driving the shaft in reverse directions, and a cam rendered operative upon starting the machine and driven through one revolution to set the driving connections to drive the shaft in one direction for a. number of revolutions of the shaft and thereafter to shift the driving connections to drive the shaft in a reverse direction during the contions to drive the shaft in one direction for a number of revolutions of the shaft and thereafter to shift the driving'connections to drive the shaft in a reverse direction, and a pin positioned by the cam upon reversal of the direction of rotation of the shaft to, secure the thread with relation to the bobbin.

bobbin.

contact with the thread as it is wound on the Q24. A, bobbin winding'machine having, in combination, a windlng shaft, drivlngconnections therefor including an electric motor,

an arm adapted to contact with the mass of thread on the bobbin, a switch and connections betweenthe switch and the arm for actuating the switch to turn as the motor when the, arm is moved in one direction by the thread mass, and to turn on the motor when the arm is moved in the opposite direction.

In testimony whereof I have signed my name to this specification.

. i OTTO R. HAAS.

22. A bobbin winding machine having, in

combination, a winding shaft, driving connections including a reversing clutch for driving the shaft in reverse directions, a cam driven from the driving connections in timed relation to the rotation of the shaft, means 7 controlled by the cam foractuating'the re- Y versing clutch after a number of revolutions of the shaft in one direction to drive the shaft in the opposite direction, a pin, and connections controlled by the cam for positioning shaft to secure the thread With relation to 

